baber/WOPTO huggingface dataset:
Patent GB-1087199-A (GB)
Title: Improvements in or relating to metal working
IPC: B21B1/22
Filed: 1964-10-02
Abstract: 1,087,199. Rolling strip. LODGE & SHIPLEY CO. Oct. 2, 1964 [Oct. 3, 1963], No. 40176/64. Heading B3M. Metal strip is reduced in thickness and increased in width by passing it obliquely around a cylindrical of conical mandrel 5, while traversing rollers R circumferentially about the mandrel. The strip is thus rolled in increments, the paths of the rollers being parallel and inclined to the strip. The rollers R are mounted in a carrier 9 which is supported in a fixed base and rotated by means of external gear teeth 13. Axial creep of the strip along the mandrel may be prevented by shoulders on the mandrel or guide rollers. A conical mandrel allows easy radial adjustment of the rollers relative to the strip.
Patent GB-1024574-A (GB)
Title: Rotor assemblies for compressors and apparatus including such rotor assemblies
IPC: C02F1/22
Filed: 1962-10-24
Abstract: 1,024,574. Purifying sea-water by freezing. DESALINATION PLANTS (DEVELOPERS OF ZARCHIN PROCESS) Ltd. Oct. 24, 1962 [May 16, 1962], No. 40285/62. Heading F4H. [Also in Division F1] In the plant for purifying sea water described in Specification 1,024,571, the rotary compressor for moving the vapour from the evaporation chamber to the condensation chamber comprises an impeller having main blades preceded by inducer blades 308, 310. Each blade 308 and an adjacent blade 310 are formed from a single strip of metal or fibreglassreinforced plastics material which is bent into a loop at its centre and inserted into a bore 302 in the inducer hub 300. The loop is then expanded into contact with the bore by means of a tapered tool. A bush 326 of the same diameter as the cylindrical head of the tool, is placed on top of the tool and forced into the loop in succession to the tool. A tool 334, Fig. 17 (not shown), is then inserted between the blades 308, 310 to spread them into contact with the walls of a slot extending between the bore 302 and the periphery of the hub 300. The blades are held in this position by a member 346 bolted to the bush 326. Flexible U-shaped members 364, 372 strengthen the blades and reduce vibration. Slots 390 may be provided in the bushes 326 to allow the bushes to be expanded by means of plugs threaded into the ends of the bushes, whereby the blades are locked in place. The main blades are of similar construction and fixing.
Patent GB-898493-A (GB)
Title: Improvements in or relating to the production of photographic colour images
Inventor: THIERS CHRISTIAAN
IPC: G03C7/30
Filed: 1958-12-15
Abstract: 898,493. Colour photography. GEVAERT PHOTO-PRODUCTEN N.V. Dec. 15, 1958 [Dec. 13, 1957], No. 40444/58. Class 98(2). A photographic material containing at least two silver halide emulsions with different optical sensitivities, one of them containing a colour coupler comprising a single pyrazolone nucleus having an active methylene group, is treated after exposure and before colour development with formaldehyde or a formaldehyde-splitting compound and after colour development with a weak oxidising agent. Undesired absorption of the coupler is thereby compensated. An example indicating the use of a multilayer material containing 1(3<SP>1</SP>- sulphoxy-phenyl)-3-heptadecyl-5-pyrazolone as magenta coupler in the green sensitive layer and a diketo methylene coupler in the layer only sensitive to blue describes treatment thereof in a bath containing sodium hexametaphosphate and hydroxide along with the formaldehyde after exposure and then with a bleaching bath which may be of potassium ferricyanide and bromide with boric acid and borax after colour development, to give undesired absorption of the magenta image of the same density over the whole image area. A further magenta coupler and a total of three yellow couplers are quoted. Specifications 774,421 and 898,494 are referred to.
Patent GB-1268235-A (GB)
Title: Pigmentary copper complexes
Inventor: INMAN ERIC RICHARD
IPC: C07C67/00
Filed: 1969-08-13
Abstract: 1,268,235. Coating. CIBA-GEIGY (U.K.) Ltd. 6 April, 1970 [13 Aug., 1969], No. 40456/ 69. Heading B2E. [Also in Divisions C3 and C4] In Example 2 a stoving lacquer containing a commercial carbamate resin, a coconut glycerol alkyd resin of the non-drying type, xylene, 2-methoxy-ethanol and titanium dioxide and the pigment obtained by coppering the azo dyestuff anthranilic acid -> 2-chloroacetoacetanilide is applied to cardboard and stoved at 120‹C for 30 minutes. In Example 14 a paint containing an unmodified butylated melamine - formaldehyde resin in n-butanol, xylol, a solution of an hydroxy acrylic resin and a pigment obtained by coppering an azo dyestuff anthranilic acid (optionally substituted by Cl or NO 2 )# acetoacetanilide (optionally substituted by Cl, CH 3  or OCH 3 ) is sprayed onto aluminium panels and stoved at 120‹C for 30 minutes. The paint may also contain finely powdered aluminium. In Example 17 an emulsion paint containing water, sodium dinaphthylmethane disulphonate, a polyvinyl acetate emulsion and the pigment obtained by coppering the azo dyestuff anthranilic acid # acetoacet-2,5-dimethoxy-4- chloranilide is applied to cardboard.
Patent GB-1383570-A (GB)
Title: High-voltage circuit breaker
IPC: H01H33/75
Filed: 1972-08-31
Abstract: 1383570 Liquid-blast circuit-breaker SACHSENWERK LICHTUND KRAFT-AG 31 Aug 1972 [1 Sept 1971] 40472/72 Heading H1N A low-oil-content circuit-breaker has an arcextinguishing chamber 2 from which a moving contact 4 is withdrawn to a position spaced from the chamber to define a gap which is enclosed by an insulating tube 8 provided with electrodes 11, 13 at its ends, the inner and outer surfaces of the tube 8 being coated with synthetic resin lacquer, e.g. polytetrafluoroethylene.
Patent GB-926316-A (GB)
Title: A new or improved means for mounting a body in or on a panel or like member
Inventor: NEILSON WILLIAM
IPC: G01D11/30
Filed: 1959-11-30
Abstract: 926,316. Mounting and supporting instruments. H. K. PORTER CO. (GREAT BRITAIN) Ltd. Nov. 7, 1960 [Nov. 30, 1959], No. 40691/59. Class 139. [Also in Group XXV] Means for removably mounting an instrument &c. in an aperture in an indicator panel 2 of an aircraft &c. comprises a split metal ring 3 engaged around the instrument and a contracting and retaining ring 8 engaging the ring circumferentially and movable axially relatively to the ring 3, by clamping screws 9 to cause the ring 3 to contract and grip the instrument. The ring 3 has a flange abutting the rear surface of the panel, and a rib 7 contacting the inner frustoconical surface of the ring 8 which has a stiffening flange with ears 10 apertured for passage of the screws 9. In a modification the ring 3 has a frusto-conical outer surface and a cylindrical inner surface. The invention is applicable to the mounting of instruments which are other than cylindrical in cross-section. When access to the rear of the panel is difficult the rings are mounted on the rear of the panel prior to insertion, from the front, of the instrument and tightening of the screws.
Patent GB-1157360-A (GB)
Title: Error-Correcting Digital Transmission Systems
IPC: H04Q1/30
Filed: 1967-09-07
Abstract: 1,157,360. Digital transmission systems. INTERNATIONAL STANDARD ELECTRIC CORP. 7 Sept., 1967 [15 Sept., 1966 (2)], No. 40944/67. Heading H4P. In a digital transmission system in which data is sent in equal length blocks of multi-bit signals, each signal being checkable for errors, and in which the blocks are sent continuously in both directions between two stations, the first signal in a block indicates the occurrence of error in the last block received. The signal indicates which signals in the received block were errored and causes repetition of those signals as the second and subsequent signals of the next block to be transmitted, unless the signals have already been corrected as described below. If the first signal of a block is errored the whole block is repeated. If no error is detected the first signal of the next transmitted block may be a data signal. If a station has no data for transmission it sends blocks of idle signals. In such condition when a signal is errored a repetition-requesting signal is immediately sent, and on reception of the latter the appropriate signal is immediately repeated. If the correction is completed prior to the end of the block in which error occurred the first signal of the next block sent from the station which detected the error does not indicate the presence of the error. On the other hand if the correction was not completed at that time the first signal does indicate error but no repetition is initiated on account of this since the errored signal will be repeated in response to the repetition-requesting signal.
Patent GB-898495-A (GB)
Title: Electrical pulse synchronising equipment
Inventor: GROVER DERRICK JOHN
IPC: H03L7/00
Filed: 1958-12-19
Abstract: 898,495. Automatic frequency control circuits. STANDARD TELEPHONES & CABLES Ltd. Dec. 19, 1958, No. 41148/58. Class 40(5). Equipment for synchronizing first and second rectangular pulse trains having different mark/space ratios comprises variable time delay means TD for the first pulse train, a comparator CT which compares the times at which the pulse edges of the first, delayed, and the second, undelayed, pulse train occur, the width of the pulse (or space) following the compared edges of the first pulse train being greater than that of the pulse (or space) following the compared edges of the second pulse train, and control means CR for the delay means TD which, in response to detection by the comparator CT of a time difference between said compared edges adjusts the delay of TD to correct said detected difference. The variable time delay circuit comprises a transistor (Fig. 2, not shown). The combined circuit for CT and CR is shown in Fig. 3. PNP transistors X2, X3 are normally off and on respectively the collector of X3 being connected to the input of TD through an amplifier AMP and current generator CG thus raising the potential at said input and increasing the delay so that pulses of first train MO1 tend to be overdelayed with respect to those of the second train MA1. For comparing rising edges of the pulse trains the first (monitored and delayed) pulse train MO1 is applied at F and the second (master) pulse train MA1 at E. If the edges of train MO1 are early with respect to those of train MA1, the input at E will not rise above that at F and X2 will remain switched off and X3 on. But if the rising edge of MO1 is delayed by time tl with respect to that of MA1, the input at E will rise above that at F for time tl so that X2 turns on and X3 turns off owing to the charging up of C3 so that the potential at the input of TD is lowered and the delay of MO1  shortened. C3.R3 is made equal to T, the cycle time of MA1 so that X3 remains turned off until X2 does not turn on due to the time delay of MO1 having been so adjusted that it tends to be early with respect to MA1. The operation of the circuit when the falling edges of the pulses are compared is described with reference to Fig. 5 (not shown). In another embodiment of Fig. 3 (Figs. 6, 7, not shown) negative (or positive) spikes are derived from either the monitored or the master pulse trains and supplied as input, over an R.C. network to the base of a transistor equivalent to X2.A complete pulse generation system incorporating the synchronizing system according to the invention is described (Fig. 9, not shown). Other electrical switches such as thyratrons or two-winding relays may replace the transistors.
Patent GB-412021-A (GB)
IPC: G03C7/14
Abstract: 412,021. Colour photography. I. G. FARBENINDUSTRIE AKT.-GES., Frankforton-Main, Germany. May 1, 1933, No. 12630, Convention date, April 30, 1932. [Class 98 (ii).] Separate monochrome component images, or a single multicolour line-screen record, are printed by contact on smooth film material from a multicolour-record image on a lenticular film, the records not required when printing each component being masked out by a lenticular film bearing a striped stencil pattern, which is placed with its embossed face in contact with the embossed face of the image-bearing lenticular film, and permits the passage only of rays from the component to be printed. The records may be printed either from the stencil film side or from the image-bearing film side, and this allows of directly printing the two components of a two-colour lenticular record in register on opposite sides of a common support with the necessary lateral inversion of one component. For producing pictures to be viewed by reflected light, the records may be printed on to sensitive films bearing an ordinary black and white line screen. To produce the stencil film for printing any component, say the green component of a tricolour record, an intermediate film is first made by exposing a sensitive lenticular film B, as shown in Fig. 1, to white light passing through an aperture g equal in area to, and at the same distance from the film as, the green area of the colour-selecting filter in the camera used for exposing the film which is to be printed. The film B is developed and reversed, and is then placed with its embossed face upon the embossed face of another sensitive lenticular film, and printed thereon by contact. The printed film, when developed and reversed, forms the stencil film for printing the green component record. Stencils for printing the blue and red records are similarly produced. The printing of a component image may be effected as shown in Fig. 4, in which H is a source of light such as a uniformly-illuminated white plane, K is the lenticular original film bearing the tricolour record, L is the lenticular stencil in embossedface contact with the original K and bearing under each lenticle transparent stripes g<11> separated by black strips, and M is the smooth sensitive film to receive the print. Alternatively, the positions of the light-source H and sensitive film M shown in Fig. 4 may be interchanged, in which case the print produced will be laterally inverted with respect to the print produced by the arrangement shown in Fig. 4. When a line-screen record is to be printed, the line screen on the sensitive layer is placed in contact with the striped side of the stencil film.
Patent GB-894184-A (GB)
Title: An electrical contact device
IPC: H01H36/00
Filed: 1958-12-29
Abstract: 894,184. Electrically-released switches. SIEMENS & HALSKE A.G. Dec. 29, 1958 [Jan. 15, 1958], No. 41336/61. Divided out of 891,001. Class 38 (5). In a contact device in which magnetic contact springs F1, F2 may be enclosed in a sealed glass tube (not shown), the contacts are closed by energization of a surrounding coil (not shown) and held closed by the flux #d from a permanent magnet Md. The flux #d is opposed by a flux #k from permanent magnets Mk but this flux #k is limited by the additional reluctance of the springs F1, F2, due to the flow of electric current I in the springs. If the current I is interrupted the opposing flux #k increases and the resultant flux at the contact ends is insufficient to hold the contacts closed. The permanent magnets Md, Mk may be replaced by energized coils.
Patent GB-1485889-A (GB)
Title: Data storage device
IPC: G11C11/403
Filed: 1975-10-09
Abstract: 1485889 Voltage-variable capacitors NCR CORP 9 Oct 1975 [11 Nov 1974] 41413/75 Heading H1K [Also in Division H3] A capacitor which has a low capacitance when the voltage applied thereto is below a threshold level and a high capacitance at voltages above the threshold comprises an N-type substrate 1 having a P-type region 5 to which is connected one electrode of the capacitor. The other electrode is connected to a metal layer 3 separated from an adjacent region of the substrate by an insulating layer 2. Above the threshold voltage an inversion layer 4 forms below the layer 2 to increase the capacitance.
Patent GB-1489514-A (GB)
Title: Microporous materials
IPC: H01M50/491
Filed: 1975-10-09
Abstract: 1489514 Porous unplasticized polyvinyl chloride PORVAIR Ltd 9 Oct 1975 41466/75 Heading C3C Microporous unplasticized polyvinyl chloride is made by forming a uniformly dispersed mixture of unplasticized PVC, an organic solvent therefor and a removable ground particulate filler, shaping the mixture and then coagulating the mixture by treatment with at least one leaching agent for the filler which is at least partially miscible with the solvent and either simultaneously or subsequently leaching all the filler to leave the PVC in microporous form, the ratio of filler to PVC being 6 : 1 to 20 : 1 by weight. In the examples (1 and 5) and samples 1, 5 and 7-14) solutions of polyvinyl chloride in dimethyl formamide were mixed with sodium chloride or ammonium sulphate, spread on a conveyer, immersed in water as the coagulation and leaching medium and washed in water to form porous sheets which may be used as battery separators.
Patent GB-892426-A (GB)
Title: Improvements in or relating to negative feedback amplifier arrangements
Inventor: HAKIM SAHIR SABIR
IPC: H03F1/34
Filed: 1959-12-07
Abstract: 892,426. Transistor amplifying circuits. GENERAL ELECTRIC CO. Ltd. Dec. 7, 1960 [Dec. 7, 1959], No. 41487/59. Class 40(6). A negative feedback amplifier, as shown comprising a three-stage resistance-capacity coupled transistor amplifier with feedback over network 6, is stabilized by means of a two-terminal impedance network 7 connected across one of the interstage coupling impedances. According to the invention a suitable configuration for the network 7 is determined by breaking the feedback path at the point 10 and connecting a variable frequency oscillator 11 to it, connecting an appropriate load 12 to the output of the amplifier and measuring the frequency response. The difference between this and the desired response is calculated and network 7 chosen so as to produce a corresponding insertion loss.
Patent GB-1464300-A (GB)
Title: Prostaglandin derivatives
IPC: C07C405/00
Filed: 1974-09-24
Abstract: 1464300 Prostaglandins YAMANOUCHI PHARMACEUTICAL CO Ltd 24 Sept 1974 [25 Sept 1973 27 Sept 1973 15 April 1974] 41543/74 Heading C2C The invention comprises prostaglandins of the Formulµ I and II  wherein A is C=O or C(H) ÀÀÀ OH; one of R 3  and R 4  is H and the other of them is C 1-4  alkyl; one of R 5  and R 6  is H and the other of them is hydroxy; and one of R 7  and R 8  is H and the other one of them is C 1-4  alkyl; one of R 1  and R 2  is H and the other of them is a protected hydroxy group; and R 9  is a protective group for a hydroxy group and their preparation. The compounds are prepared by reacting 4#-[3-(2- tetrahydropyranyloxy) - 4 - methyl - 1 - transoctenyl] - 5α - (2 - tetrahydropyranyloxy)- 3,3a#,4,5,6,6a# - hexahydro - 2H - cyclopenta- [b]furan - 2 - ol with (4 - carboxypentyl)triphenylphosphonium bromide or (4-carboxy-2- methylbutyl)triphenylphosphonium bromide, if desired, hydrolysing the resulting compounds, or oxidizing the products so obtained, and then hydrolysing the oxidation products. 4# - [3 - (2 - Tetrahydropyranlyoxy)- 4- methyl - 1 - trans - octenyl] - 5α - (2 - tetrahydropyranyloxy) - 3,3a#,4,5,6,6a# - hexahydro - 2H- cyclopenta[b]furan-2-ol is obtained by reducing the corresponding cyclopenta[b]p-uran-2-one. The compounds possess similar pharmacological properties to the corresponding naturally occurring prostaglandins.
Patent GB-899400-A (GB)
Title: Lubricating compositions and additive concentrates therefor
IPC: C10M159/00
Filed: 1960-12-02
Abstract: An oil-soluble polymer which can be used as a lubricating oil additive consists of a copolymer of (1) one or more monomers containing a polymerizable double bond and an epoxy or thioepoxy group and (2) one or more monomers containing a polymerizable double bond and a hydrocarbon group containing not more than 30 carbon atoms.  A typical polymer specified is a copolymer of glycidyl methacrylate and stearyl methacrylate.  The epoxy or thioepoxy group can be reacted with compounds containing an active hydrogen atom either before or after polymerization.  Oils that the polymer can be added to are mineral lubricating oils of varying viscosities, synthetic lubricating oils, lubricating oils consisting wholly of or containing fatty oils and lubricating greases.  The copolymer may be present in an amount between 0,1 and 5% based on the finished lubricant.  Other additives can be used.ALSO:A copolymer suitable as a lubricating additive (see Group III) is derived from (1) one or more monomers containing a polymerizable double bond and a carbon chain in which either two adjacent carbon atoms form part of an epoxy or thioepoxy ring, or one of these carbon atoms carries a hydroxyl or mercapto group and the other an ether, thioether, aryl-, alkyl-, aralkyl-, alkarylcarboxy, -thiocarboxy, or -dithiocarboxy-group or a group derived from oxyacids of sulphur or a group derived from oxygen and/or sulphur-containing acids of phosphorus and (2) one or more monomers containing a polymerizable double bond and a hydrocarbon group having not more than 30 carbon atoms.  Monomers (1) specified are 3,4-epoxybutene-1 and 11,12-epoxydodecene-1, esters of glycidol and thioglycidol with acrylic, methacrylic and crotonic acid, diesters with maleic acid; vinyl glycidyl ether and vinyl thioglycidyl ether.  Monomer (2) may be either a straight or branched chain olefin, an ester of a saturated alcohol and an unsaturated acid or an ester of an unsaturated alcohol and a saturated acid. Additionally monomer (2) can contain a comonomer having a short carbon chain, such as styrene or methyl methacrylate.  When monomer (1) is an ester or an ether of an epoxy alcohol, the copolymers may be reacted with an alcohol, mercaptan, carboxylic, thiocarboxylic or dithiocarboxylic acid, an oxyacid of sulphur or an oxygen and/or sulphur containing acid of phosphorus.  The monomers may be polymerized by any known method and the resulting polymer utilized in an amount of from 0,5 to 5% in a lubricating oil.
Patent GB-1127185-A (GB)
Title: Polymeric coating composition
IPC: C09G1/16
Filed: 1965-10-01
Abstract: 1,127,185. Coated tiles. A. E. STALEY MFG. CO. 1 Oct., 1965 [19 Oct., 1964; 12 July, 19651, No. 41792/65. Heading B2K. [Also in Division C3] Rubber, vinyl, vinyl asbestos and asphalt tiles are coated in Examples 5 and 6 with a floor polish comprising an aqueous acidic emulsion of a styrene-ethyl acrylate-methacrylic acid-acrylonitrile copolymer, diethylene glycol monomethyl ether, zinc acetate, wax, tributoxyethyl phosphate and surface-active agents.